Checking if a variable is an array in JavaScript is one of the most common tasks you may encounter while building a Javascript-based application. There are several ways to perform this check, each with its pros and cons. In this post, we'll review three ways to determine if a variable ...
constarray=['🍝','🍜','🍲'];constnotArray='not array';_.isArray(array);// true_.isArray(notArray);// false Yes, the syntax is the same as Lodash 🤓 #Why can't we usetypeof? Often, we want to check the type of a value, we simply usetypeof ...
To check if a JavaScript array is empty or not, you can make either of the following checks (depending on your use case): const empty = !Array.isArray(array) || !array.length; const notEmpty = Array.isArray(array
JavaScript offers several ways to check if an array includes a specific value. In this article, we will explore some of the most common methods for checking for the presence of a value in an array. The first method we will look at is the indexOf() method. This method returns the index...
Here, we have discussed how to check whether a value exists within the JavaScript array or not. There are various ways to do this, but we have discussed three ways to determine whether the value exists within the array or not. In the first method, we have used the indexOf() method....
This guy is the slowest for trying to check for an Array. However, this is a one stop shop for any type you're looking for. However, since you're looking for an array, just use the fastest method above. Also, I ran some test: So have some fun and check it out....
Unlike Array.isArray() method which we used for checking if a variable is an array, there is no Object.isObject() method in JavaScript.The quickest and most accurate way to check if a variable is an object is by using the Object.prototype.toString() method....
Very often we need to check whether the element is in an array in JavaScript or not. In this snippet, we are going to learn some methods to do that.
Using the.indexOf()Function to Check if Array Contains Value in JavaScript The.indexOf()functionis a commonly used function in javascript. It works well while searching for an element in an array or even a string. Syntax indexOf(element,index) ...
Discover how to easily check if an array is empty using JavaScript. Our concise guide provides step-by-step instructions for efficient array handling.